// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//


#pragma once

namespace kumo::pollux::dwio::common {
    // Converts signed/unsigned int 16/32/64 and float/double to unsigned int of the
    // same size. Used to make a dictionary index from a type.
    template<typename T>
    struct make_index {
    };

    template<>
    struct make_index<int16_t> {
        using type = uint16_t;
    };

    template<>
    struct make_index<uint16_t> {
        using type = uint16_t;
    };

    template<>
    struct make_index<int32_t> {
        using type = uint32_t;
    };

    template<>
    struct make_index<uint32_t> {
        using type = uint32_t;
    };

    template<>
    struct make_index<int64_t> {
        using type = uint64_t;
    };

    template<>
    struct make_index<uint64_t> {
        using type = uint64_t;
    };

    template<>
    struct make_index<int128_t> {
        using type = __uint128_t;
    };

    template<>
    struct make_index<float> {
        using type = uint32_t;
    };

    template<>
    struct make_index<double> {
        using type = uint64_t;
    };
} // namespace kumo::pollux::dwio::common
